I have develop a small program which can receive, send and delete SMS.
There is no problem when I send or delete a SMS but when I receive the Serial port just tell me that :
"+CMGL: 1, "REC READ","+3247321"
while it should show me my phone number (and not a part of it), the day and the message of course.
#include <SoftwareSerial.h>
#include <String.h>
#include <SMS.h>
SoftwareSerial GPRS (7, 8 );
void setup()
{
GPRS.begin(19200); // the GPRS baud rate
Serial.begin(19200); // the GPRS baud rate
delay(1000);
Serial.println("**************** Service d'envoie et de réception de MSG ****************");
GPRS.println("AT+CSQ"); // niveau de réception
delay(1000);
Serial.println("envoi de la commande : AT+CMBF=1");
delay (1000);
//GPRS.println("AT+CMGF=l\r");
delay (1000);
GPRS.println("AT+CSCA=\"+32475161616\"\r"); //se mettre sur le réseau
delay (500);
Serial.println("envoi de la commande : AT+CPIN=\"****\"");
delay (1000);
Serial.println("envoi de la commande : AT+CSCA=\"+32475161616\""); // centre de messagerie proximus
GPRS.println("AT+CPIN=\"****\""); //insertion du code PIN
delay (100);
GPRS.println("AT+CPIN?") ; // PIN ok ou error
delay (1000);
Serial.println("**************** Appuyer sur s pour envoyer un MSG au 0473/217105 ****************");
delay (500);
Serial.println ("**************** Pour voir les MSG reçus, tapé 'r' ****************");
delay (500);
Serial.println ("**************** Pour supprimer tous les MSG, tapé 'd' ****************");
delay (500);
}
void loop()
{
if (Serial.available())
switch(Serial.read())
{
case 's':
SendMSG();
break;
case 'r':
ReceiveTxTmsg();
break;
case 'd':
Delete();
break;
}
if (GPRS.available())
Serial.write(GPRS.read());
}
///
void SendMSG()
{
GPRS.print("\r"); // Envoyer un retour à la ligne <CR>
delay(1000);
GPRS.print("AT+CMGF=1\r"); // Envoyer un SMS en mode texte
delay(1000);
GPRS.print("AT+CMGS=\"+32473217105\"\r"); // Numéro du destinataire
delay(1000);
GPRS.print("Salut !\r"); // Le texte du message
delay(1000);
GPRS.write(26); // Equivalent du Ctrl+Z (fin de texte du SMS)
}
void ReceiveTxTmsg()
{
GPRS.println("AT+CMGF=1") ; //passe les sms en mode texte
delay (1000);
//delay (500);
//GPRS.println("AT+CMGL"); //montre tous les sms non lu
//GPRS.println("AT+CMGR=\r"); //Lis le deuxième sms
// Serial.println("AT+CMGR=9");
// delay (3000);
// GPRS.println("AT+CMGR=1");
GPRS.println("AT+CMGL=\"ALL\""); //lis tous les sms
//GPRS.println("AT+CMGR=1");
delay (10000);
}
void Delete()
{
GPRS.println("AT+CMGD=1,4\r");
}
In what way doesn't it work? When you issue the command do you get an error? You only need to do this once, the modem will remember the setting until it is reset.
My bad, it actually works !
Thank you !
But it only shows me the entire message when it's received. When I want to read it in the memory
it shows me the start of the message.
Hello!
At the time in this thread i would like to ask question - can You show which module are You using and how connected hardware? Im having the same difficulties.
I am using THIS modul and connecting it to Arduino MEGA. 19 pin(RX1) of Arduino i connect with moduls TX7 and Arduino 18 pin(TX1) with RX7. Below is the picture showing it.
Dont worry about power, i also used 72VA power supply, it didnt worked also. Modem doesnt need such current as recomennded for serial communication.
Tx from Arduino works because i can make call and send sms, but in serial port monitor i cant see no data coming from SIM900.
As im not sure there's a problem in programm or hardware i added my sketch below. Basically there is 4 cases - 2nd case calls and hangs up, in 3rd im asking is there any sms and in 4th case im asking signal quality. In 3rd and 4th case atleast something needs to be showing in serial port monitor but nothing..
I also used lines like this for data reading from SIM900, but none of them worked.
if (mySerial.available())
{
Serial.write(mySerial.read());
}
if (mySerial.available() > 0)
{
Serial.println(mySerial.read());
}
if(mySerial.available() >0)
{
incoming_char=mySerial.read(); //Get the character from the cellular serial port.
Serial.print(incoming_char); //Print the incoming character to the terminal.
}
}
Complete code:
#include <SoftwareSerial.h>
SoftwareSerial mySerial(19, 18); //Arduino 18 pin(TX1) and 19 pin(RX1)
int LED = 13;
void setup()
{
pinMode(LED, OUTPUT);
Serial.begin(19200);
mySerial.begin(19200); // the GPRS baud rate
powerUp();
}
void powerUp()
{
pinMode(9, OUTPUT);
digitalWrite(9,LOW);
delay(1000);
digitalWrite(9,HIGH);
delay(2000);
digitalWrite(9,LOW);
delay(9000);
Serial.println("Modem powered");
}
void loop()
{
if (Serial.available())
{
char inSer = Serial.read();
switch (inSer)
{
case '1': //Just for confirmation that incoming characters from serial port is reading
digitalWrite(LED, HIGH);
delay(3000);
digitalWrite(LED, LOW);
break;
case '2':
mySerial.println("ATD + +371200....;"); //Calling to my cell. I just deleted part of my phone number cus i dont want to shove it
delay(100);
mySerial.println();
delay(7000);
mySerial.println("ATH"); //Hangup
break;
case '3':
mySerial.println("AT+CNMI=?\r"); //asking for new sms message indication
delay(100);
break;
case '4':
mySerial.println("AT+CSQ=?\r"); //asking for signal quality report
delay(100);
break;
}
}
if (mySerial.available())
{
Serial.write(mySerial.read());
}
}
I would be appreciated for help how to read data from SIM900
